Antenna



FIG. 1 is a front elevation view of a first embodiment of an antenna;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a bottom perspective view thereof;

FIG. 5 is a front elevation view thereof, with the base in broken line removed;

FIG. 6 is a top plan view thereof, with the base in broken line removed;

FIG. 7 is a front elevation view of a second embodiment of an antenna;

FIG. 8 is a top plan view thereof;

FIG. 9 is a rear elevation view thereof;

FIG. 10 is a bottom perspective view thereof;

FIG. 11 is a front elevation view thereof, with the base in broken line removed; and,

FIG. 12 is a top plan view thereof, with the base in broken line removed.

The broken lines in the figure drawings represent unclaimed environment that forms no part of the claimed design. 

CLAIM The ornamental design for an antenna, as shown and described. 